PLASMA INSTABILITIES AND COMPENSATION OF THE SPACE CHARGE OF AN ION BEAM,
Abstract
Intense ion beams in magnetic fields, employed in such work as isotope separation and injection into plasma mirror machines are investigated experimentally to determine the beam intensity levels at which beam instabilities arise. A review of the work in this field is given. Detailed analysis of the most important processes include the discussion of the generation of plasma oscillations in a cold plasma inter penetrated by fast ion beams, the instabilities in the ion source plasma and amplification of oscillation in a cold plasma by ion beam oscillations. The criteria for instability growth, amplification and interaction coupling are discussed and examples quoted. The proposed methods of improved compensation of the space charge of the ion beam are based on the conclusion that three step instability behavior is basic to the system considered by the author. These include reduction in the oscillation amplitude in the ion source, reduction of the coefficient of growth of instability in the ion beam by redesigning the beam optics, and finally, the reduction of secondary plasma oscillations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 04, 1970
- Accession Number
- AD0704009
Entities
People
- M. V. Nezlin
Organizations
- National Air and Space Intelligence Center